On Tue, Feb 19, 2019 at 11:00 AM Lawrence Mitchell via petsc-users <
[email protected]> wrote:
> Dear petsc-users,
>
> I have two (different) distributions of the (topologically) same DMPlex
> object (DM_a and DM_b).
>
> I would like to identify the map from points(DM_a) to points(DM_b) such
> that I can transfer fields between the two.
>
> Does such a facility exist?
>
Case #1: You made DM_b from DM_a
Then you are fine. The PetscSF you get from Distribute() is the map.
Case #2: They are completely unconnected
This is hard. I wrote code to do it at least twice, but I keep throwing
it away when I rewrite things because
it is so ugly. Hopefully you do not need this.
Thanks,
Matt
> Lawrence
--
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
